San san zhuiwo filtering equipment ltd. Is registered at the southern village of the spa district of giangang city, kanang city, hebei province. The registration authority is the san zian city market supervision authority, with representatives of legal persons and includes the production, processing and sale of: filtering equipment, filters, filters, dust removal equipment, environmental protection equipment, air purification equipment, sophisticated machinery; technical advice, technical services, technology transfer of filtering equipment; sale of: filtration cores, filtering materials, equipment spare parts, hardware, mechanical equipment and accessories, empty pressors and accessories, rubber products, plastics, paper products; rental of mechanical equipment (subject to the approval of the relevant authorities and subject to the law)*